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EQUITY (Schedule of Stock Option Activity) (Details) - Employee [Member] - USD ($)
$ / shares in Units, $ in Thousands
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Number of options      
Outstanding at beginning of year 1,501,100 4,431,383 5,374,000
Granted 1,267,500 570,000 600,000
Exercised (171,100) (1,307,448) (272,000)
Expired   (1,209,005) (21,750)
Forfeited (197,500) (983,830) (1,248,867)
Outstanding at end of year 2,400,000 1,501,100 4,431,383
Exerciable at end of year 753,081 555,182 3,357,465
Vested and expected to vest at December 31, 2016 2,270,670    
Weighted-average exercise price      
Outstanding at beginning of year $ 5.0 $ 5.0 $ 5.0
Granted 4.9 5.5 5.2
Exercised 3.3 4.3 4.0
Expired   5.7 6.5
Forfeited 5.7 5.5 5.2
Outstanding at end of year 5.0 5.0 5.0
Exercisable at end of year 5.1 $ 4.7 $ 5.2
Vested and expected to vest at December 31, 2016 $ 5.0    
Weighted-average remaining contractual term      
Outstanding 4 years 4 months 24 days 4 years 3 months 18 days  
Exercisable at December 31, 2016 3 years 3 months 18 days    
Vested and expected to vest at December 31, 2016 4 years 4 months 24 days    
Aggregate intrinsic value      
Outstanding at January 1, 2016 $ 74    
Outstanding at December 31, 2016 380 $ 74  
Exercisable at December 31, 2016 101    
Vested and expected to vest at December 31, 2016 $ 360